Using && and ||

When stringing together more than two commands, you may want to control the running of the second command based on the outcome of the first command. You can use:

&&

If the command that precedes && completes successfully, the command following && is run. Leave a space on either side of the && operator: command && command.

||

If the command that precedes || fails, the command following || is run. Leave a space on either side of the || operator: command || command.